In reply to Ramblin dave:
You can take different ways from several points, so I guess they were originally separate routes. On much of Lliwedd you can scramble at around grade 3. However, given the loose/vegetated nature of much of the rock, plus the serious consequences of a fall, it's usually better to stick to well trafficked routes.
People who come from a mountaineering background generally won't have too much trouble on Lliwedd. The climbing isn't technically hard, but you need to be confident about your ability to route find (even if it's the wrong one!) and deal with some poorly protected scrambly bits, loose rock and vegetation.
Also while it's not impossible to abseil off, the meandering nature of many routes make this difficult.
Post edited at 14:27